The first public beta version of OS X Yosemite will be available to all tomorrow July 24, stated in the official press release Apple. Sign up now for “OS X Beta Seed Program” free to receive a download link for the OS X 10.10 beta version. Prior to this, Apple opened a massive access only to the final version of the OS.
Mac users who want to test out OS X beta must register at appleseed.apple.com/sp/betaprogram, and priority access to the platform will be granted to the first million applicants, regardless of their country of residence.
After a short registration on the official site, Apple will start sending links to download the Installer OS X Yosemite on Thursday July 24. Apple wants to make sure that users who wished to take part in the beta testing will have access to a stable OS.
Public beta OS X Yosemite allows a quick glance to the major release coming this Fall. It should be noted that many features specially integration with the iPhone and iPad, might not be available. They will be available after the final release of iOS 8 and OS X Yosemite.
While is it not recommended to install beta version of OS X Yosemite on your main computer, because Apple does not exclude failures in its work, and before installing to make a backup copy of your current operating system just in case.